CN106435061A - Furnace slag granulation system with automatic cleaning function - Google Patents
Furnace slag granulation system with automatic cleaning function Download PDFInfo
- Publication number
- CN106435061A CN106435061A CN201610900274.5A CN201610900274A CN106435061A CN 106435061 A CN106435061 A CN 106435061A CN 201610900274 A CN201610900274 A CN 201610900274A CN 106435061 A CN106435061 A CN 106435061A
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- slag
- roll
- seam
- chute
- granulation system
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to a furnace slag granulation system with an automatic cleaning function. The furnace slag granulation system comprises a slag tank, a slag gap adjusting device and a granulation device; an opening is formed in the bottom of the slag tank; the slag gap adjusting device includes a first roller and a second roller; a gap is formed between the first roller and the second roller to form a slag gap; the slag gap is positioned rightly below the bottom opening of the slag tank; the first roller and/or the second roller can move in the horizontal direction; the first roller and the second roller rotate in the furnace slag incoming direction, and are opposite in rotating direction; the granulation device is arranged below the slag gap adjusting device, and is provided with a spraying outlet; the spraying outlet of the granulation device is towards the lower side of the slag gap; and the granulation device is a high-pressure spraying device. The system is simple in structure and small in size, is simple in operation and high in reliability when granulating slag, is ideal in granulation effect, realizes automatic cleaning in the granulation process, and largely reduces the equipment investment and operation costs.
Description
Technical field
The present invention relates to high temperature furnace slag granulation field is and in particular to a kind of slag granulation system with automatic clearing function
System.
Background technology
In metallurgy industry, blast furnace ironmaking produces substantial amounts of high-temperature liquid furnace slag, at present, processes slag and mainly adopts water quenching,
Water quenching is processed mainly has bottom to consider method, Yin Bafa, Tula method, Lhasa method, Ming Tekefa etc., needs in this method processing procedure
Consume substantial amounts of water, and a large amount of H can be produced in processing procedure2S and SOxEtc. harmful gass, environmental pollution is serious.At present
The dry granulation occurring is more representational to be wind quenching method and centrifuging, and wind quenching method is to be produced at a high speed with high-power granulation blower fan
Air-flow dispels, is granulated liquid blast furnace, and power consumption is big, equipment bulky complex, floor space are big, investment and operating cost are high,
In liquid blast furnace changes in flow rate, wind speed and air quantity are difficult to coordinate.Centrifuging is to rely on rotating disk or revolving cup high-speed rotation to produce
Centrifugal force by liquid blast furnace slag granulation, the particle diameter distribution of grain slag is more uniform, but the granulation of high-speed rotation at high temperature dress
The reliability put is poor, and granulation effect is more sensitive to the temperature of liquid blast furnace and changes in flow rate in addition, only by adjusting rotating speed
Effect is unsatisfactory.
Because slag has caking property, can be bonded in unavoidably on equipment in processing procedure, the existing dress processing slag
In putting, automatically cleaning cannot be realized during slag treatment.
Content of the invention
For above-mentioned produced problem in slag treatment, the present invention provides a kind of slag grain with automatic clearing function
Change system.
A kind of slag granulation system with automatic clearing function it is characterised in that this slag granulation system include slag chute,
Slag seam adjusting means, granulating device；
Described slag chute bottom has opening；
Described slag seam adjusting means includes first roll, second roll, and described first roll and described second roll are respectively
It is arranged on described slag chute bottom, leave gap between described first roll and described second roll and form described slag seam, described slag
Seam is located at the underface of described slag chute bottom opening, and described first roll and/or described second roll can be in the horizontal direction
Mobile, the side of described first roll and described second roll is respectively equipped with driving means, described first roll and described second
Roll is rotated along slag direction of flow by described driving means, the rotation direction phase of described first roll and described second roll
Instead；
Described granulating device is arranged on below described slag seam adjusting means, and described granulating device has jet exit, described
Below the jet exit of granulating device stitches towards described slag, described granulating device is high-pressure injection device.
Further, described slag granulation system also includes the first scraper plate and the second scraper plate；
Described first scraper plate and described second scraper plate are separately positioned on described first roll and the lower section of described second roll,
The scraper plate top of described first scraper plate and described second scraper plate can be adjusted with the spacing of described first roll and described second roll
Section.
Further, described slag chute includes slag chute straight section and the oblique section of slag chute, and described slag chute straight section is fixed in horizontal direction
It is connected to the bottom of the oblique section of described slag chute, in the middle of described slag chute straight section, there is opening, the oblique section of described slag chute has in the horizontal direction
There is tilt angle alpha.
Further, described tilt angle alpha is 90 ° of 30 ° of ＜ α ＜.
Further, the end of described slag chute straight section can be circular arc.
Further, described granulation system also includes deflector, and described deflector is arranged on the oblique section of described slag chute
On medial wall, it is located at the lower section of slag import, described deflector is the bowl structure of back-off.
Further, described granulation system also includes clearing up the airduct of slag seam, and the airduct of described cleaning slag seam can be stretched
Enter at described slag chute inner setting position, the outlet of the airduct of described cleaning slag seam is just stitched to described slag, described cleaning slag seam
The outlet of airduct is tapered configuration, and the outlet distribution of the airduct of described cleaning slag seam stitches mating shapes with described slag.
Further, the airduct of described cleaning slag seam can be one or more.
Further, the interior media of the airduct of described cleaning slag seam is air and/or steam.
Further, described granulation system also includes level monitoring device and control device, described level monitoring device
It is arranged on the side wall of described slag chute, the liquid level signal monitoring is delivered to described control device by described level monitoring device,
Described control device controls the width of described slag seam according to the liquid level signal receiving.
Beneficial effects of the present invention：
Present configuration is simple, small volume, can be according to the width of the uninterrupted real-time regulation slag seam carrying out slag and granulation dress
The jet pressure put, the slag seam of rectangle and the roll that can adjust in the horizontal direction further ensure the slag entering granulating device
Curtain thin and thick uniformly, carrys out stream whole slags simultaneously and is granulated, after making granulation, slag granules are uniform in size, and granulation efficiency improves；
Blade structure ensure that the cleaning at roll edge；High temperature furnace slag flows into slag chute by deflector and plays a buffering shunting
Effect it is ensured that the slag stream before forming slag curtain be uniformly distributed, steady flow, the formation for uniform slag curtain provides good structure to protect
Card.High to simple to operate during slag granulation, reliability using present system, granulation effect preferable it is achieved that in granulation
Automatic cleaning, and greatly reduce investment and the operating cost of equipment.
Brief description
Fig. 1 has the slag granulation system structure diagram of automatic clearing function for the present invention；
Fig. 2 has the slag granulation system top view of automatic clearing function for the present invention.
In accompanying drawing：
Slag chute 1, first roll 2, second roll 3, the first scraper plate 4, the second scraper plate 5, granulating device 6, slag chute straight section 7, slag
The oblique section of groove 8, deflector 9, the airduct 10 of cleaning slag seam.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings and by specific embodiment, and following examples are descriptive
, it is not determinate it is impossible to protection scope of the present invention is limited with this.
A kind of slag granulation system with automatic clearing function in the present embodiment, it can receive high temperature furnace slag, and to stove
Slag carries out granulated processed, and the slag after process can be to its secondary utilization.
As shown in figure 1, this granulation system includes slag chute 1, first roll 2, second roll 3, the first scraper plate 4, the second scraper plate
5th, granulating device 6.
Slag chute 1 is used for receiving high temperature furnace slag, and slag chute 1 includes slag chute straight section 7 and the oblique section of slag chute 8, and slag chute straight section 7 is in level side
To the bottom being fixedly connected on the oblique section of slag chute 8, there is in the middle of slag chute straight section 7 opening, slag chute straight section 7 can fall to carrying out to slag
Buffering, reduces the impact to slag chute 1 for the high temperature furnace slag, extends the service life of slag chute 1.The end of slag chute straight section 7 can be circular arc, makes
Slag flow to slag chute 1 bottom opening more smoothly, reduce slag accumulation.The oblique section of slag chute 8 has necessarily in the horizontal direction
Tilt angle alpha, 90 ° of wherein 30 ° ＜ α ＜, the angle of inclination in the range of this is beneficial to carry out slag enter slag chute straight section 7 middle opening.
First roll 2 and second roll 3 are separately positioned on the bottom of slag chute straight section 7, first roll 2 and second roll 3 it
Between leave gap formed slag seam, slag seam be located at slag chute straight section 7 middle opening underface, come slag enter slag chute 1 in flow to slag chute
Straight section 7 middle opening, enters slag seam, and by slag slit slagging curtain, first roll 2 and second roll 3 respectively can be in level sides
Move up, the distance between first roll 2 and second roll 3 can be adjusted according to the uninterrupted carrying out slag, and then can adjust
Slag seam width, it is ensured that the uniformity of grain slag curtain, carrys out stream whole slags and is granulated.What slag stitched is shaped as rectangle (see Fig. 2).
The side of first roll 2 and second roll 3 is respectively equipped with driving means, and first roll 2 and second roll 3 are passed through to drive
Dynamic device rotates along slag direction of flow, and the rotation direction of two rolls is contrary.The rotation of first roll 2 and second roll 3 is real
Existing mode is such as：Driving means include roll rotating shaft, rolling bearing and motor, in the end of first roll 2 and second roll 3 respectively
Roll rotating shaft is installed, roll rotating shaft is connected with motor by rolling bearing, drives roll rotating shaft rotation using motor, and then drive
First roll 2 and second roll 3 rotate.
First scraper plate 4 and the second scraper plate 5 are separately positioned on first roll 2 and the lower section of second roll 3, the first scraper plate 4 He
Second scraper plate 5 can adjust the spacing on its scraper plate top and first roll 2 and second roll 3 respectively, and such as granulation system also wraps
Include scraper plate rotary shaft, rolling bearing and motor, scraper plate be arranged in scraper plate rotary shaft, scraper plate rotary shaft pass through rolling bearing with
Motor be connected, by motor drive scraper plate rotary shaft rotation, and then adjust scraper plate angle of inclination so as to scraper plate top close to or
Away from the edge of first roll 2 and second roll 3, when scraper plate top is close to roll edge, scraper plate can be by first roll 2 He
In second roll 3, the slag of bonding is wiped off it is ensured that the cleaning at first roll 2 and second roll 3 edge, and non-caked slag, by stove
Slag smoothly derives slag chute 1, does not block slag seam, forms stable slag curtain；When scraper plate top is away from roll edge, facilitate roll water
Movement square upwards, is also beneficial to change roll.
Granulating device 6 is arranged on the lower section of the first scraper plate 4, and granulating device 6 is the injection apparatus of water under high pressure or gases at high pressure,
Granulating device 6 has jet exit, and the jet exit of granulating device 6, towards below slag seam, to form slag after slag falls through slag seam
Curtain, the water under high pressure or gases at high pressure jet exit through granulating device 6 sprays to slag curtain, and under high-pressure injection, high temperature furnace slag is by grain
Change.
For making the slag stream that slag flows to during bottom opening uniform, the oblique section of slag chute 8 medial wall also can arrange deflector
9, it has shunting action, and deflector 9 is located at the lower section of slag import, and deflector 9 along slag seam length direction setting can be
The bowl structure of back-off, can be such as shunting bulge.Deflector 9 can future slag shunting, make slag to flow to slag chute 1 bottom and open
The slag stream of mouth is uniformly distributed.
This granulation system also can arrange the airduct 10 of cleaning slag seam, for ensureing the cleaning of slag seam, the airduct of cleaning slag seam
10 can extend at slag chute 1 inner setting position, and the outlet of the airduct 10 of cleaning slag seam is just stitched to slag, the airduct 10 of cleaning slag seam
Outlet be tapered configuration, such as taper or flat mouth shape, tapered configuration is beneficial to increase the pressure in the exit of airduct 10 of cleaning slag seam
Power, the outlet distribution of airduct 10 of cleaning slag seam stitches mating shapes with slag.The airduct 10 of cleaning slag seam can be one or many
Individual, figure 2 illustrates one of the airduct 10 of multiple cleaning slag seams airduct mouth.
When carrying out slag granulation using this granulation system, slag falls on deflector 9, and deflector slag in 9 future shunts,
So that slag stream is uniformly fallen in slag chute 1, flow to the opening in the middle of slag chute straight section 7, enter slag seam, first roll 2 and second roll 3
Size according to carrying out slag flow controls the width of slag seam, when carrying out quantity of slag change and being big, by first roll 2 and second roll 3 to both sides
Move horizontally so that slag seam width becomes big；When carrying out quantity of slag reduction, first roll 2 and second roll 3 are moved to by-level
Dynamic, slag seam width is diminished.In granulation, first roll 2 and second roll 3 are all by oneself intrinsic direction of rotation rotation
Turn, in rotary course, slag the scraping by the first scraper plate 4 and the second scraper plate 5 of first roll 2 and second roll 3 edge bonding
Plate end is wiped off, fall into slag seam in flow to granulating device it is achieved that slag seam automatic cleaning.The whole process to flow in slag
In, the non-caked slag of roll is made by the horizontal range adjusting first roll 2 and second roll 3 it is ensured that slag seam unobstructed, protect
Card formation state preferable slag curtain, ensure that the slag entering slag chute 1 is all granulated simultaneously.In granulation, granulation dress
The granulation jet pressure putting 6 stitches the change of width with slag and changes, when slag seam width becomes big, the granulation jet of granulating device 6
Pressure increases, and when slag seam width becomes hour, the granulation jet pressure of granulating device 6 reduces.The airduct 10 of cleaning slag seam is carrying out slag
Shi Yizhi has compressed air to be blown into it is ensured that the cleaning of slag seam, slag is smoothly derived slag seam, does not block slag seam, formed stable
Slag curtain is it is ensured that the ending phase to flow in slag so that the opening all through slag chute 1 bottom for the slag is flowed down it is ensured that the company to flow of slag
Continuous property and stability.Air in the airduct 10 of cleaning slag seam can also change the mixing of steam or air and steam into
Gas.
The flow carrying out slag can be judged by the height of slag liquid level, and the flow that liquid level rising then carrys out slag becomes big, liquid
Potential drop is low, and the flow carrying out slag diminishes.Granulation system can monitor slag liquid by setting level monitoring device on slag chute 1 side wall
Position, arranges control device in granulation system simultaneously.The liquid level signal monitoring is delivered to control device by level monitoring device,
Control device adjusts the distance between first roll 2 and second roll 3 according to liquid level signal, that is, adjust slag seam width, to ensure
Liquid level in slag chute 1 keeps within the specific limits, and level monitoring device can be thermocouple.
Or in another embodiment, first roll 2 is fixing, second roll 3 can move left and right in the horizontal direction, pass through
The distance between the mobile regulation first roll 2 of second roll 3 and second roll 3, and then adjust slag seam width, or first rolls
Roller 2 can move left and right in the horizontal direction, and second roll 3 is fixing, by the mobile regulation first roll 2 of first roll 2 and the
The distance between two rolls 3, and then adjust slag seam width.
Granulation system in the present invention is all using exotic material, and can be placed in whole or in part in high-temperature burner hearth, really
Protect the slag after being granulated to fall in burner hearth.
Although being described in detail to the principle of the present invention above in conjunction with the preferred embodiments of the present invention, this area skill
Art personnel are it should be understood that above-described embodiment is only the explanation of the exemplary implementation to the present invention, not to bag of the present invention
Restriction containing scope.Details in embodiment is simultaneously not meant to limit the scope of the invention, in the spirit without departing substantially from the present invention and
In the case of scope, any equivalent transformation based on technical solution of the present invention, simple replace etc. obvious change, all fall within
Within the scope of the present invention.
Claims (10)
1. a kind of slag granulation system with automatic clearing function is it is characterised in that this slag granulation system includes slag chute
(1), slag seam adjusting means, granulating device (6)；
Described slag chute (1) bottom has opening；
Described slag seam adjusting means includes first roll (2), second roll (3), described first roll (2) and described second roll
(3) it is separately positioned on described slag chute (1) bottom, leave gap between described first roll (2) and described second roll (3) and formed
Described slag seam, described slag seam is located at the underface of described slag chute (1) bottom opening, described first roll (2) and/or described second
Roll (3) can move in the horizontal direction, and the side of described first roll (2) and described second roll (3) is respectively equipped with drive
Dynamic device, described first roll (2) and described second roll (3) are rotated along slag direction of flow by described driving means, institute
State first roll (2) and the rotation direction of described second roll (3) is contrary；
Described granulating device (6) is arranged on below described slag seam adjusting means, and described granulating device (6) has jet exit, institute
State below the jet exit of granulating device (6) stitches towards described slag, described granulating device (6) is high-pressure injection device.
2. the slag granulation system with automatic clearing function according to claim 1 is it is characterised in that described slag grain
Change system also includes the first scraper plate (4) and the second scraper plate (5)；
Described first scraper plate (4) and described second scraper plate (5) are separately positioned on described first roll (2) and described second roll
(3) lower section, the scraper plate top of described first scraper plate (4) and described second scraper plate (5) and described first roll (2) and described the
The spacing of two rolls (3) can be adjusted.
3. the slag granulation system with automatic clearing function according to claim 1 and 2 is it is characterised in that described slag
Groove (1) includes slag chute straight section (7) and the oblique section of slag chute (8), and described slag chute straight section (7) is fixedly connected on described slag chute in horizontal direction
The tiltedly bottom of section (8), has opening in the middle of described slag chute straight section (7), and the oblique section (8) of described slag chute has inclination in the horizontal direction
Angle [alpha].
4. the slag granulation system with automatic clearing function according to claim 3 is it is characterised in that described inclination angle
Degree α is 90 ° of 30 ° of ＜ α ＜.
5. the slag granulation system with automatic clearing function according to claim 3 is it is characterised in that described slag chute is straight
The end of section (7) can be circular arc.
6. the slag granulation system with automatic clearing function according to claim 3 is it is characterised in that described granulation system
System also includes deflector (9), and described deflector (9) is arranged on described slag chute oblique section (8) medial wall, is located at slag import
Lower section, described deflector (9) be back-off bowl structure.
7. the slag granulation system with automatic clearing function according to claim 6 is it is characterised in that described granulation system
System also includes clearing up the airduct (10) of slag seam, and the airduct (10) of described cleaning slag seam can extend into described slag chute (1) inner setting
At position, the outlet of the airduct (10) of described cleaning slag seam is just stitched to described slag, the outlet of the airduct (10) of described cleaning slag seam
For tapered configuration, the outlet distribution of the airduct (10) of described cleaning slag seam and described slag seam mating shapes.
8. the slag granulation system with automatic clearing function according to claim 7 is it is characterised in that described cleaning slag
The airduct (10) of seam can be one or more.
9. the slag granulation system with automatic clearing function according to claim 7 is it is characterised in that described cleaning slag
The interior media of the airduct (10) of seam is air and/or steam.
10. the slag granulation system with automatic clearing function according to claim 7 is it is characterised in that described granulation
System also includes level monitoring device and control device, and described level monitoring device is arranged on the side wall of described slag chute (1), institute
State level monitoring device and the liquid level signal monitoring is delivered to described control device, described control device is according to the liquid receiving
Position signal controls the width of described slag seam.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610900274.5A CN106435061B (en) | 2016-10-14 | 2016-10-14 | A kind of slag granulation system with automatic clearing function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610900274.5A CN106435061B (en) | 2016-10-14 | 2016-10-14 | A kind of slag granulation system with automatic clearing function |
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| CN106435061A true CN106435061A (en) | 2017-02-22 |
| CN106435061B CN106435061B (en) | 2018-12-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107287368A (en) * | 2017-06-07 | 2017-10-24 | 北京中冶设备研究设计总院有限公司 | A kind of converter slag processing unit and method |
| CN108342528A (en) * | 2017-09-27 | 2018-07-31 | 中能立化科技有限公司 | A kind of conveying of slag and heat-exchange system |
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| CN101665845A (en) * | 2009-09-28 | 2010-03-10 | 清华大学 | Liquid blast furnace slag granulation method and device thereof |
| CN201558848U (en) * | 2009-11-12 | 2010-08-25 | 无锡五冶重工机械有限公司 | Roll cleaner for cold roll for cold rolling mill |
| CN102690907A (en) * | 2011-11-25 | 2012-09-26 | 河南科技大学 | Steel slag ball production equipment and granulating system thereof |
| CN206069905U (en) * | 2016-10-14 | 2017-04-05 | 北京立化科技有限公司 | A kind of slag granulation system with automatic clearing function |
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| CN101205562A (en) * | 2006-12-21 | 2008-06-25 | 张维田 | Metallurgical slag treatment method and treatment apparatus |
| CN101665845A (en) * | 2009-09-28 | 2010-03-10 | 清华大学 | Liquid blast furnace slag granulation method and device thereof |
| CN201558848U (en) * | 2009-11-12 | 2010-08-25 | 无锡五冶重工机械有限公司 | Roll cleaner for cold roll for cold rolling mill |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107287368A (en) * | 2017-06-07 | 2017-10-24 | 北京中冶设备研究设计总院有限公司 | A kind of converter slag processing unit and method |
| CN108342528A (en) * | 2017-09-27 | 2018-07-31 | 中能立化科技有限公司 | A kind of conveying of slag and heat-exchange system |
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| Publication number | Publication date |
|---|---|
| CN106435061B (en) | 2018-12-11 |
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